Most of the patches are presets of the respective plugins. Brass and kick sounds (Hexter) are based on madFame tutorials. Snare (Oxe FM) and bass (JuceOPL) patches are my own creations.
The .tar.gz file contains the Non Session Manager session. It should encompass all of the track's artefacts. It also contains the JuceOPL patch (.sbi file) as well as the Oxe FM presets (vst-1331185229 extracted from ~/.config/ardour5/presets) created in Ardour.